CVE-2025-67953 is an incorrect privilege assignment vulnerability found in the Booking Activities software, versions up to and including 1.16.44. This vulnerability allows an unauthenticated attacker to escalate privileges remotely without requiring user interaction, as indicated by the CVSS vector AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. The flaw arises from improper assignment or enforcement of user privileges within the booking-activities module, enabling attackers to gain elevated access rights beyond their intended scope. This can lead to full compromise of the affected system, including unauthorized access to sensitive booking data, modification or deletion of records, and disruption of service availability. Although no exploits have been reported in the wild yet, the high CVSS score (8.1) reflects the critical nature of the vulnerability. The vulnerability was reserved in December 2025 and published in January 2026, indicating recent discovery and disclosure. The Booking Activities software is commonly used in tourism, event management, and related sectors for scheduling and managing bookings, making it a valuable target for attackers seeking to disrupt operations or steal sensitive customer information. The lack of available patches at the time of disclosure necessitates immediate risk mitigation through compensating controls.

For European organizations, this vulnerability poses significant risks, especially for those in the travel, tourism, and event management industries that rely on Booking Activities software. Exploitation could lead to unauthorized access to customer data, including personal and payment information, resulting in privacy breaches and regulatory non-compliance under GDPR. Integrity of booking records could be compromised, causing operational disruptions, financial losses, and reputational damage. Availability impacts could disrupt service delivery, affecting customer trust and business continuity. Given the remote and unauthenticated nature of the exploit, attackers could leverage this vulnerability to gain footholds in corporate networks, potentially escalating to broader attacks. The high severity and broad impact on confidentiality, integrity, and availability make this a critical concern for European entities managing sensitive booking operations.

Until official patches are released by the Booking Activities Team, European organizations should implement the following mitigations: 1) Restrict network access to Booking Activities management interfaces using firewalls and VPNs to limit exposure to trusted users only. 2) Employ strict role-based access controls (RBAC) and regularly audit user privileges to detect and prevent unauthorized privilege escalations. 3) Monitor logs and network traffic for unusual activities indicative of privilege abuse or exploitation attempts. 4) Isolate Booking Activities systems from critical infrastructure to contain potential breaches. 5) Engage with the vendor for early patch notifications and apply updates promptly once available. 6) Conduct internal security assessments and penetration tests focusing on privilege management within the booking platform. 7) Educate staff on recognizing suspicious system behavior and reporting incidents swiftly. These targeted actions go beyond generic advice and address the specific risk vectors of this vulnerability.